Definition, synonyms and related words
simple past tense and past participle of guarantee
"He guaranteed to deliver the package by noon, but he never showed up."
In plain English: To guarantee something as a verb means to promise that it will definitely happen or be true without any doubt.
"The manager guaranteed that all tickets would be delivered by noon."
Usage: Use "guaranteed" to describe an action that has already been completed where you promised something would happen or provided a specific assurance. Do not use it as a present-tense verb; instead, use "guarantees" when referring to current promises and "guarantee" for future commitments.
Made certain; promised.
"The airline guaranteed that our luggage would be delivered to your hotel within two hours of landing."
In plain English: Guaranteed means something is promised to happen or be true without any doubt.
"The hotel offers a guaranteed reservation even if you arrive late."
Usage: Use guaranteed as an adjective to describe something that comes with a formal promise or assurance, such as a warranty on a product. It implies that a specific result or quality is certain to be delivered if the terms are met.
Derived from Old French garantir, this term originally meant to make secure or provide protection. It entered English with the sense of pledging something as certain or free from doubt.